EV174-S-00A – Univers al Input, NON-ISOLATED OFF-LINE REGULATOR Evaluation Board Report 12V 3.6W ACDC power supply Design Specs Input Voltage Output Voltage Output Current Isolation MPS IC Application Value 85-265 12 0.3 Unit VAC VDC A No MP174GS Home Appliance, white goods, consumer electronics Industrial Controls Standby Power Document Number EBXXX Author Application Engineering Department Date Nov, 2014 Revision 1.0 Design Summary EV174-S-00A evaluation board provides a reference design for a universal offline power supply with 12V, 0,3A output. It contains the complete specification of the power supply, a detailed circuit diagram, the entire bill of materials required to build the power supply, drawing of the power inductors and transformers, and test data of the most important performance. EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 1 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE DESCRIPTION FEATURES The EV174-S-00A Evaluation Board is designed to demonstrate the capabilities of MP174. The MP174 is a primary-side constant voltage regulator providing accurate constant voltage (CV) regulation without Opto-coupler. It supports Buck, Buck-Boost, Boost and Flyback topologies. • The EV174-S-00A Evaluation Board is designed as Buck application. EV174-S-00A typically drives a 3.6W with a 12V/300mA load from 85VAC to 265VAC, at 60/50Hz. • • • • The EV174-S-00A has an excellent efficiency and meets IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. MP174 features various protections, including thermal shutdown (TSD), VCC under-voltage lockout (UVLO), over-load protection (OLP), shortcircuit protection (SCP), and open loop protection. MP174GS is available in SOIC8 package. ELECTRICAL SPECIFICATION Parameter Symbol Value Units 85 to 265 12 0.3 VAC V A Input Voltage Output Voltage Output Current V IN V OUT I OUT Output Power P OUT 3.6 W η >75 % Efficiency (full load) • • • • • • Primary-Side non-isolated Constant Voltage (CV) Control Integrated 700V13.5ΩMOSFET < 100mW No-load power consumption Up to 3.6W output power Peak-Current Control with Peak Current Compression Low Vcc operating current Limited Maximum Frequency Frequency Foldback Multiple Protections: SCP, OCP, OTP, and VCC UVLO Low Cost and Simple External circuit Internal high-voltage current source All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology”, are Registered Trademarks of Monolithic Power Systems, Inc. Warning: Although this board is designed to satisfy safety requirements, the engineering prototype has not been agency approved. Therefore, all testing should be performed using an isolation transformer to provide the AC input to the prototype board. EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 2 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE EV174-S-00A EVALUATION BOARD TOP VIEW BOTTOM VIEW (L x W x H) 68mm x 28mm x 17mm Board Number MPS IC Number EV174-S-00A MP174GS EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 3 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR MPS CONFIDENTIAL AND PROPRIETARY INFORMATION– INTERNAL USE ONLY EVALUATION BOARD SCHEMATIC Figure 1—Schematic EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 4 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE PCB LAYOUT (SINGLE-SIDED) Figure 2—Top Layer Figure 3—Bottom Layer EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 5 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE EV174-S-00A BILL OF MATERIALS Qty Ref Value 1 1 1 C1 C2 C3 220nF 2.2μF 470pF 2 C4, C5 1 1 1 5 1 1 1 1 1 1 1 1 1 Description Ceramic Capacitor;16V;X7R Ceramic Capacitor;10V;X7R Ceramic Capacitor;50V;X7R Electrolytic 10μF Capacitor;400V;20% 100μF Electrolytic Capacitor;35V 1μF Ceramic Capacitor;16V;X7R 1N4148WSDiode;75V;0.15A; C6 C7 D1 D2, D3, D4, 1N4007 Diode;1000V;1A D6, D7 D5 STTH1R06 Diode;600V;1A F1 10Ω Resistor;5%;1W L1 1mH Inductor;1000uH;8Ω;0.1A L2 1.2mH Inductor;1.2mH;1.8Ω;400mA R1 19.1kΩ Film Resistor;1% R2 24kΩ Film Resistor;1% R4 4.99kΩ Film Resistor;1% R6 3kΩ Film Resistor;1% U1 MP174 Primary side regulator Package Manufacture Manufacture_PN 0603 0603 0603 muRata muRata muRata GRM188R71C224KA01D GRM188R71A225KE15D GRM188R71H471KA01D DIP Any DIP 0603 SOD-323 Jianghai muRata Diodes CD287-35V100 GRM188R71C105KA12D 1N4148WS-7-F DO-41 Diodes 1N4007 DO-41 DIP DIP DIP 0603 0603 0603 1206 SOIC8 ST Yageo Any Emei Yageo Yageo Yageo Yageo MPS STTH1R06 FKN1WSJT-52-10R Any DR9X12P2M1.2-00 RC0603FR-0719K1L RC0603FR-0724KL RC0603FR-074K99L RC1206FR-073KL MP174GS Any EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 6 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE CIRCUIT DESCRIPTION The EV174-S-00A is configured in a buck regulator topology, it uses primary-side-control which can mostly simplify the schematic and get a cost effective BOM. It can also achieve accurate constant voltage and acceptable cross regulation. F1 is used to protect circuit from component failure or some excessive short events; also it can restrain the inrush current. C4, L1 and C5 compose π filter to guarantee the conducted EMI meet standard EN55022. C2 and C3 are also used for energy storage and protecting against line surge. R2, C2, and D1 are used as VCC power supply. Though MP174 is equipped with an internal high voltage current source, using this circuit can achieve better efficiency. C1 is the sample-hold capacitor, used for reflecting output voltage. R1 and R4 are resistor divider for detecting output voltage by sampling voltage on C1. D5 is the freewheeling diode. For universal voltage applications, use a diode with a 600V reverse block voltage. Ultra-fast recovery diode is recommended for better efficiency. C6 and C7 are output capacitors for 12V output. C6 should be low ESR electrolytic capacitor for better output ripple. C7 is ceramic capacitor to reduce high frequency voltage ripple. R6 is dummy load to lower the output voltage of 12V rail at no load condition. EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 7 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE Input voltage was set at 230VAC/50Hz. Output was Surge Performance loaded at full load and operation was verified Line to Line 1kV surge tested according to following each surge event. IEC61000-4-5. Surge Level (V) Input Voltage (VAC) Injection Location Injection Phase (°) Test Result (Pass/Fail) 1000 1000 1000 1000 -1000 -1000 -1000 -1000 230 230 230 230 230 230 230 230 L to N L to N L to N L to N L to N L to N L to N L to N 0 90 180 270 0 90 180 270 Pass Pass Pass Pass Pass Pass Pass Pass The board can pass 2kV surge test by simple using 2 10ohm/1W fuse resistor, as the circuit show below. D1 D2 1N4007 1N4148WS F1 10/1W F2 L1 10/1W R5 D3 D4 1N4007 1N4007 85~265VAC NC C4 10uF/400V NC 7 C5 10uF/400V 5 Drain D7 1N4007 1N4007 Vcc FB NC Source NC Source MP174 D6 19.1K 1 220nF NC CX1 NC 24K U1 6 RV1 R1 C1 1mH 8 L R2 2 C3 3 C2 R3 R4 2.2uF NC 4.99K L2 1.2mH 12V/300mA 470pF VOUT 4 D5 STTH1R06 C6 100uF/35V C7 R6 1uF 3K GND N GND EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 8 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE EVB TEST RESULTS Performance waveforms are tested on the evaluation board. V IN =85-265VAC, V OUT =12V, I OUT =0.3A CC Mode Load, T A=22ºC EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 9 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. V IN =85-265VAC, V OUT =12V, I OUT =0.3A, CC Mode Load, T A=22ºC EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 10 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. V IN =85-265VAC, V OUT =12V, I OUT =0.3A, CC Mode Load, T A=22ºC EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 11 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. V IN =85-265VAC, V OUT =12V, I OUT =0.3A, CC Mode Load, T A=22ºC EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 12 EV174-S-00A – UNIVERSAL INPUT, NON-ISOLATED OFF-LINE REGULATOR PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE QUICK START GUIDE 1. Preset Power Supply to 85VAC ≤ V IN ≤ 265VAC. 2. Turn Power Supply off. 3. Connect the Line and Neutral terminals of the power supply output to L and N port. For three-wire input application, make OUTPUT GND connected to Earth. 4. Connect Different Load to Corresponding Outputs : a. Positive (+): 12V OUT b. Negative (–): GND 5. Turn Power Supply on after making connections. Contact Information To request this evaluation board, please refer to your local sales offices which can be found from: http://www.monolithicpower.com/Company/Contact-Us Disclaimer Monolithic Power Systems (MPS) reserves the right to make changes to its products and to discontinue products without notice. The applications information, schematic diagrams, and other reference information included herein is provided as a design aid only and are therefore provided as-is. MPS makes no warranties with respect to this information and disclaims any implied warranties of merchantability or non-infringement of third-party intellectual property rights. MPS cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a MPS product. No circuit patent licenses are implied. Certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage (“Critical Applications”). MPS PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE‑SUPPORT APPLICATIONS, DEVICES OR SYSTEMS, OR OTHER CRITICALAPPLICATIONS. Inclusion of MPS products in critical applications is understood to be fully at the risk of the customer. Questions concerning potential risk applications should be directed to MPS. MPS semiconductors are typically used in power supplies in which high voltages are present during operation. High voltage safety precautions should be observed in design and operation to minimize the chance of injury. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV174-S-00A Rev.1.0 www.MonolithicPower.com 3/31/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2015 MPS. All Rights Reserved. 13